Time-controlled gas-cock.



PAT'CEBD JULY so, 190'?.

W. HOWLIN. TIME GONTROLLED GAS COCK.

LPV'PLIUATION PHJ-ID NOV. 18. 1905.

3 SHEETS-SHEET 1.

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Wn eases PAT'ENTED'JULY so, 1907.

W. HOWLIN. TIME GONTROLLBD GAS COCK.

APPLIOATION FILED NOV. 18, 1905.

ms aufs uns La., wlmmcmv, n. c.

WILLIAM HOWLIN, OF NEWTOWN y. No. 861,854.

To all whom 'it may concern:

Be it known that I, WILLIAM HowLIN, a subject of the King of Great Britain, residing at 17 Laura street, Newtown, near Sydney, State of New South Wales, Commonwealth of Australia, have invented certain new anduseful Improvements in Time-Controlled Gas- Cocks, of which the following is a speciication.

This invention relates to time controlled gas cocks andhas been devised principally with the view to providing an inexpensive automatic arrangement for openi of a lamp provided with a pilot or other igniting device may bef raised and lowered at predetermined times; .while it may be rendered inoperative on moonlight nights or whenever desired.

` fInj describing the inventionl will do so withrelerence to agas lamp but it will be understood that the same meansmay be employed for opening or closing taps or valves of any other kind or for operating eleetric switches and the like.

. Refeningto the accompanying drawings :-Figure 1 is a view in perspective of the apparatus operated by an Aordinary clockof which only those parts are shown which actuate the apparatus. Fig. 2 is a front elevay `tion of the apparatus, the clock or other actuating means not being shown. Fig. 3 is a perspective view Y illustrating the main operating parts of the apparatus. 4 is a perspective view of the cams or snails by meansoiwhch the apparatus is set in motion at va- 1 riouspidetermined times. Figs. 5 and 6 illustrate dif- AV `ferent positions of the levers, cams and crank disk when "the apparatus is in'motion. Fig. 7 is a view in perspective illustrating the employment of an electromagnet to actuate the starting lever. Fig. 8 is a perspective viewand Fig` 9 a sectional plan on plane 9 9 Fig. 8 illustrating more especially the means employed when i it isidesired to indicate the time on the clock dial.

The same numerals refer to the same vor like parts.

The clock and apparatus are contained within a dust proof casing 8, the clock preferably having instead of the usual dial, a dial 9 provided with twentyfour hour divisions. Mounted on the arbor 10 are sleeves carrying the cams or snails 11 and 12 having respectively the indicating pointers or hands 13 and 14. The clock in addition to its ordinary mechanism (not shown) has a bell crank lever, one arm 15 being in engagement with 'either of the snails l1 and 12 and the other arm 16 with the starting lever 17.

18 is a spring for supplying motion to the apparatus.

The driving wheel 19 imparts its motion through the gear Wheels 20A, 21, 21A, 22, 22A, and 23, to the pinion or gear wheel 20. Gn the spindle 24 of said pinion or gear wheel 20 are secured a cam 25 and' a disk 55 cock 28. On the spindle 29 of the gear wheel 22 is a ing or closing the taps of gas lamps in which the light.

26 provided with a rod 27 connecting to a tap 'or` NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA.

Specification ofr Letters Patent. Application ned November 18,1905. serial 110.288,07?.

UNITED STATES PATnNroFFIeE.

I TIIME-CNTROLLED GAS-COCK.

'Patented July so, 1907.

ver the other arm 32 engaging with the cam 25. The cam has a lng 33 with which engages a lever 3G Operated by the handlem37d-. On the gear wheel 22 is a lug 35 which engages with a pawl 34. The spring 18 ofthe 60 apparatus is wound by turning the spindle 38 on the end of which is a gear wheel 39 gearing with the wheel 40 mounted on the spindle 41 of the driving wheel 19.

ln Figs. 8 and 9 on the arbor 10 is a pinion 49 gearing with the wheel of pinion 51 thereby making the two 65 wheels 47 and 48 to move Vsimultaneously with the snails 1l and 12. These snails are suiicicntly loose to allow them to be moved independently of the wheels 47 and 4S when it is desired to alter the hours of lighting or extinguishing. Also the indicators or hands 13 and 70A 14 on the sleeves of the snails l1 and 12 are sufciently loose to be moved independently ofthe snails. On these sleeves are also the notched disks 52 and 53 which are lnovcd by suitable keys engaging in the notches so as to alter the positions of the camswhen desired. Aftei' 75 the mechanism has been set to operate at the required times the two hands 13 and 14 are placed one over the other, thereby appearing as one hand, when viewed "y from the front, and act as an hour indicator.v On the arbor 10 is the niinute hand 4G. l 'l The following is the operation of the apparatus. The 1 ciock and apparatus each having been wound the snails, A l1 and 12 are set respectively to the hours for lighting and extinguishing orraising and lowering the light;` No more attention is necessary except every eight days (when an eight day clock is used) for re-winding, and when the hours for raising and lowering the light are to be altered. When the end of the arm 15 of the bell crank has almost been reached by the edge or point of the cam 11 and the arm 16 having meanwhile pulled 90 the levers 17 and 32 into the position shown in Fig. 5, the cam 30 has made a quarter revolution but is held there by the lug 35 engaging with the pawl 34. On the arm 15 passing over the edge of the cam l1 the bell clank lever resumes its normal position, allowing also lever 17-through the agency of the spring 42to fall into the position shown in Fig. 6. Then the pawl 34 disengages with lug 35 and allows the mechanism of the apparatus to continueits motion and in order to do so the cam 25 by means of arm 32 prevents the arm 31 en- 100 gaging with the cam 30 until the disk 2G has made a half revolution. The arm 31 then engages with the cam 30 (the lever 32 having resumed its normal position as shown in Fig. 2) thus permitting the disk to make onlyhalfrevolutionsatatime, cachhalf revolution either turning on or off thc tap.

The cam 30 has a rabbet or recess 45 so that the arm 3l may engage with it and thereby prevent the mechanism being accidentally set in motion when winding the spring 18.

In the event of the light not being required (as for instance on several successive moonlight nights) the 861,854 s 'f 'i n t i l handle 37 ismoved Sothat thc lever 36 engages with the able with the first arm, a lever,spring-operated in one lug 33 on the cam 30 thus preventing the mechanism of the apparatus being set in motion but at the same time allowing the clock to continue its movement.

Instead of clock mechanism, an electromagnet 43 lmay be used to actuate the starting lever 17, the latter being provided with an armature 44 (Fig. 7). In this arrangement the necessary current to energize the magnet may be controlled from a central station.

In turning off or lowering the light the arm l5 is actuated by the snail I2 and the same movement is repeatcd to turn the disk 26 half a revolution.

Having now described my invention, What I claim as new and desire to secure by Letters Patent is:-

1. In an apparatus of the class described, the combination of a cam, an arm for engaging said cam, a second cam, a second arm for engaging .the second cam and -movable with the first arm, a level', spring-operated in one direction, a clock, mechanism actuated by the clock for moving theilever in opposition to the spring and to cause said lever to disengage said arms from the cams. a detent movable with the lever for temporarily. preventing the rotation of said first cam, the second cam serving to opcrate against the second armV on the rotation thereof to hold the first arm in an inoperative position during a predetermined period of rotation of the second cam, and means for rotating the two cams.

2. In an apparatus of the class described, the combination of a cam, an arm for engaging said cam. a second cam, a second arm for engaging the second cam and movable with the first arm, a lever, spring-operated in one direction, a clock, mechanism actuated by the clock for moving the lever in opposition to the spring and to cause said lever to disengage said arm from the cams, a detent movable with the lever for temporarily preventing the ro tation of said first cam, the second cam serving to operate against the second arm on the rotation thereof to hold the first arm in an inoperative position during a predetermined period of rotation of the second cam, means for rotating the two cams, and manually operable means for engaging the first cam to prevent rotation thereof'. l

3. In an apparatus of the class described, the combination of a cam, an arm for engaging said cam, a second cam, a second arm for engaging the second cam and movdirection, a clock, independentlyadjustable cams actuated by the clock and each adapted to move said lever in opposition to the spring and to cause said level' to disengage said arms from the cams, a detent movable with the lever for temporarily preventing the rotation of said first cam, the second cam serving to operate against the second arm on the rotation thereof to hold the first 'arm in an inoperative position during a predetermined period of rotation of'the second cam, cams.

4. ln an apparatus of the class described, the combination of a cam, an arm for engaging said cam, a second cam, a second arm for engaging the second cam and movable with` the first arm, a lever, spring-operated in one direction, a clock, independently'adjustable cams actuated by the clock and each adapted to move said lever in opposition to the spring and to cause said lever to disengage said arms from the cams, a detent movable with the lever for temporarily preventing the rotation of said first cam, the second cam serving to operate against the second arm on the rotation thereof lo hold the first arm in an inoperative position during a and means for rotating the first two predetermined period of rotation of the second cam, a

spring motor for rotating the first two cams, and notched disks for adjusting said independently-adjustable cams relatively said lever.

The combination of a train of gears, a spring for turning one of the gears and thereby the other gears, la cam concentric with one of the gears, an arm to normally prevent turning of the cam, a second cam, a second arm coperative with the second cam, a leven, spring operated in one direction, a detent movable with the lever and adapted when said lever is tripped to prevent turning motion of the first cam, and the second cam when turned' servinf,r to operate against the second arm to hold the first arm in an ineffective position, a second lever acting against the first lever, and clock mechanism to move the second lever in a direction to operate the first lever and thereby release the two cams.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses,

to each other for varying their time of actuatingv 

